Which one of the following compounds does not exhibit resonance?

Arrange the following in the decreasing order of stability:
$I. CH_2=CH-CHO$
$II. ^+CH_2-CH=CH-O^-$
$III. ^-CH_2-CH=CH-O^+$

The order of relative stability of the contributing structures is:
$I: CH_2=CH-CHO$
$II: ^+CH_2-CH=CH-O^-$
$III: ^-CH_2-CH=CH-O^+$
Choose the correct answer from the options given below:

The correct order of stability for the given canonical structures is:
$(I)$ $H-C(=O)-CH_2^-$
$(II)$ $H-C(O^-)(^+)-CH_2^-$
$(III)$ $H-C(O^-)=CH_2$

Consider the following statements. Which of the following statement$(s)$ is/are correct?
$(a)$ $CH_2=CH-CH_2^+$ is more stable than $CH_3-CH^+-CH_3$.
$(b)$ Naphthalene has two types of $C-C$ bonds.
$(c)$ The structures shown are both permissible resonating structures.
$(d)$ The phenyl anion is less stable than the cyclohexadienyl anion shown.

Which of the following is the most unstable resonating structure?